101142440031 has 4 divisors (see below), whose sum is σ = 134856586712. Its totient is φ = 67428293352.

The previous prime is 101142439987. The next prime is 101142440071. The reversal of 101142440031 is 130044241101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130044241101 = 3 ⋅43348080367.

It is not a de Polignac number, because 101142440031 - 2⁷ = 101142439903 is a prime.

It is a super-2 number, since 2×101142440031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101142440071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16857073336 + ... + 16857073341.

It is an arithmetic number, because the mean of its divisors is an integer number (33714146678).

Almost surely, 2^101142440031 is an apocalyptic number.

101142440031 is a deficient number, since it is larger than the sum of its proper divisors (33714146681).

101142440031 is an equidigital number, since it uses as much as digits as its factorization.

101142440031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33714146680.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 101142440031 its reverse (130044241101), we get a palindrome (231186681132).

The spelling of 101142440031 in words is "one hundred one billion, one hundred forty-two million, four hundred forty thousand, thirty-one".